Home / 1,188,432.32-1,640,031.88-644,565.92

Finding the Fourth Proportional to 1,188,432.32, 1,640,031.88 and 644,565.92

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Solution

The fourth proportional to 1,188,432.32, 1,640,031.88 and 644,565.92 is: 889,498.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,432.32 : 1,640,031.88 = 644,565.92 : x
  2. Step 2: Convert to fraction form
    1,188,432.32/1,640,031.88 = 644,565.92/x
  3. Step 3: Cross multiply
    1,188,432.32x = 1,640,031.88 × 644,565.92
  4. Step 4: Simplify right side
    1,188,432.32x = 1,057,108,657,561.53
  5. Step 5: Solve for x
    x = 1,057,108,657,561.53/1,188,432.32
  6. Step 6: Final answer
    x = 889,498.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.